64730121 has 8 divisors (see below), whose sum is σ = 86390304. Its totient is φ = 43111680.

The previous prime is 64730051. The next prime is 64730143. The reversal of 64730121 is 12103746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64730121 - 2¹⁹ = 64205833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64730091 and 64730100.

It is not an unprimeable number, because it can be changed into a prime (64730161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6616 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (10798788).

Almost surely, 2^64730121 is an apocalyptic number.

It is an amenable number.

64730121 is a deficient number, since it is larger than the sum of its proper divisors (21660183).

64730121 is a wasteful number, since it uses less digits than its factorization.

64730121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20871.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 64730121 is about 8045.5031539364. The cubic root of 64730121 is about 401.5153375478.

Adding to 64730121 its reverse (12103746), we get a palindrome (76833867).

The spelling of 64730121 in words is "sixty-four million, seven hundred thirty thousand, one hundred twenty-one".